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misbehaviour_handle.go
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/
misbehaviour_handle.go
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package types
import (
"bytes"
"github.com/cosmos/cosmos-sdk/codec"
sdk "github.com/cosmos/cosmos-sdk/types"
sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
"github.com/cosmos/ibc-go/v7/modules/core/exported"
"github.com/ethereum/go-ethereum/common"
)
func (cs ClientState) CheckForMisbehaviour(ctx sdk.Context, cdc codec.BinaryCodec, clientStore sdk.KVStore, msg exported.ClientMessage) bool {
switch msg := msg.(type) {
case *UpdateClientMessage:
m, err := msg.GetProxyMessage()
if err != nil {
return false
}
switch m.(type) {
case *MisbehaviourProxyMessage:
return true
default:
return false
}
default:
return false
}
}
func (cs ClientState) verifyMisbehaviour(ctx sdk.Context, cdc codec.BinaryCodec, clientStore sdk.KVStore, msg *UpdateClientMessage, pmsg *MisbehaviourProxyMessage) error {
for _, state := range pmsg.PrevStates {
cons, err := GetConsensusState(clientStore, cdc, state.Height)
if err != nil {
return err
}
if !bytes.Equal(cons.StateId, state.StateID[:]) {
return sdkerrors.Wrapf(ErrInvalidMisbehaviour, "unexpected StateID: expected=%v actual=%v", cons.StateId, state.StateID)
}
}
signer := common.BytesToAddress(msg.Signer)
if !cs.IsActiveKey(ctx.BlockTime(), clientStore, signer) {
return sdkerrors.Wrapf(ErrInvalidMisbehaviour, "signer '%v' not found", signer)
}
if err := VerifySignatureWithSignBytes(msg.ProxyMessage, msg.Signature, signer); err != nil {
return sdkerrors.Wrapf(ErrInvalidMisbehaviour, err.Error())
}
if err := pmsg.Context.Validate(ctx.BlockTime()); err != nil {
return sdkerrors.Wrapf(ErrInvalidMisbehaviour, "invalid context: %v", err)
}
return nil
}